Luminaire



FIG. 1 shows a top view of a luminaire showing the design;

FIG. 2 shows a perspective view thereof;

FIG. 3 shows a front view thereof;

FIG. 4 shows a side view thereof;

FIG. 5 shows another side view thereof; and,

FIG. 6 shows a bottom view thereof.

The portions of the luminaire shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a luminaire, as shown and described. 